Are comp 987 springs any good?
03-21-2004, 08:11 PM
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Are comp 987 springs any good? I have a set sitting here that I am gonna use if the are reliable. I remember some spring was breaking just can't remember which one it was. Or, should I just get a set of Z06 springs. The cam has .595 lift. Thanks, Andy
03-21-2004, 08:24 PM
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Originally Posted by snketr
I have a set sitting here that I am gonna use if the are reliable. I remember some spring was breaking just can't remember which one it was. Or, should I just get a set of Z06 springs. The cam has .595 lift. Thanks, Andy
03-21-2004, 08:48 PM
#3
The 987 is an excellent spring for the correct application. I have 9,000 miles on mine and no problems at all. However, the max lift a cam should have with a 987 is normally .590, your cam at .595 is probably has too much lift. I would find another spring. This is based on what TEA told me about the way my 987's were set up on my Stage 2 heads. Depending on install height the max lift might be slightly different.
03-22-2004, 01:23 AM
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The Z06 springs will not support .595" of valve lift. The Comp 987s are decent springs when used in the correct application. I would not recommend them for any sort of XE or XE-R based lobe trying to turn more than 6400 rpms.
I would look into the new Crane dual spring which fits into the factory spring pocket with no machine work.
Jason
I would look into the new Crane dual spring which fits into the factory spring pocket with no machine work.
Jason
